Diagnosis Procedure

WARNING: This page is about a different car, the 2018 Nissan Maxima. However, it is still accessible from the selected car via links, so may be relevant.

CHECK STEERING SWITCHES RESISTANCE

Turn ignition switch OFF.
Disconnect combination switch connector M149.
Check resistance between combination switch connector terminals.

Combination switch connector M149		Condition	Resistance ? (Approx.)
Terminal	Terminal	Condition	Resistance ? (Approx.)
16	19	Depress SOURCE switch.	1
		Depress switch.	121
		Depress switch.	321
		Depress switch.	723
		Depress OK switch.	2023
17		Depress VOL DOWN switch.	1
		Depress VOL UP switch.	121
		Depress switch.	321
		Depress DISP BACK switch.	723
		Depress DISP switch.	2023

Is the inspection result normal?

YES

GO TO 2 .

Replace steering switches. Refer to Removal and Installation .

CHECK HARNESS BETWEEN COMBINATION SWITCH AND COMBINATION METER

Disconnect combination meter connector M24 and combination switch connector M30.

Check continuity between combination meter connector M24 and combination switch connector M30.

Combination meter		Combination switch		Continuity
Connector	Terminal	Connector	Terminal
M24	21	M30	11	Yes
	22		9
	23		8

Check continuity between combination meter connector M24 and ground.

Combination meter		Ground	Continuity
Connector	Terminal
M24	21	-	No
	22
	23

Is the inspection result normal?

YES

GO TO 3 .

Repair or replace harness or connectors.

CHECK COMBINATION SWITCH

Check continuity between combination switch connectors M30 and M149.

Combination switch				Continuity
Connector	Terminal	Connector	Terminal
M30	8	M149	17	Yes
	9		16
	11		19

Is the inspection result normal?

YES

GO TO 4 .

Replace spiral cable. Refer to Removal and Installation .

CHECK HARNESS BETWEEN COMBINATION METER AND AV CONTROL UNIT

Disconnect AV control unit connector M161.

Check continuity between combination meter connector M23 and AV control unit connector M161.

Combination meter		AV control unit		Continuity
Connector	Terminal	Connector	Terminal
M23	49	M161	23	Yes
	50		24

Check continuity between combination meter connector M23 and ground.

Combination meter		Ground	Continuity
Connector	Terminal
M23	49	-	No
	50

Is the inspection result normal?

YES

Replace AV control unit. Refer to Removal and Installation .

Repair or replace harness or connectors.